I'm not a big fan of tying nymphs with bead heads for various reasons. I have been using a lot of Hugh Hartstell's tutorials on tying, and he seems to use a lot of the wire weight wrap (.015 non-toxic).

The other day, I acidentally bought .025 wire weight. Is this going to be too big for #12, 14, & 16 nymphs? I tied a few pheasant tails with it, but they seem to be a little heavy. I have only been doing 6-7 wraps, instead of the 10-15 that Hugh suggests with the .015.

The other thing I have noticed is that it seems to point the tail at a weird angle, since the barbs are stacked onto the thicker wire weight and then tied down to the hook shank/bend area.